<div id="signature" class="field form-group has-feedback formio-component formio-component-signature formio-component-signature  signature-pad" ref="component">
  <label class="" for="signature-signature">
    Signature
  </label>
  <div ref="element">
    <img style="width: 100%;" ref="signatureImage">
  </div>
  <div ref="messageContainer"></div>
</div>